Packing.



No. 854,672. PATENTED MAY 21, 1907.

G. B. SHEPARD.

PACKING.

APPLICATION FILED SEPT. 17, 1908.

UN ITED STATES CHARLES B. SHEPARD, OF GALENA, KANSAS.

PACKING.

To (ti/l whom, it may concern:

Be it known that I, OHARLEs B. SHEPARD, a citizen of the United States,residing at Galena, in the county of Cherokee and State of Kansas, haveinvented certain new and useful Improvements in Packings, of which thefollowing is a specification.

This invention relates to new and useful improvements in packing and itparticularly pertains to a packing adapted for pistons of pumps,engines, or slide valves.

The invention aims as a primary object to provide a packing in which thewear may be readily compensated by a novel adjusting means embodied inthe invention as an entirety.

The invention aims as a further object to provide a device of the abovetype which shall be simple in construction, inexpensive to manufactureand practical and efficient in use.

The detailed construction will appear in the course of the followingdescription in which reference is had to the accompanying drawingsforming a part of this specification, like numerals designating likeparts through out the several views, wherein,

Figure 1 is a central longitudinal section of a packing constructed inaccordance with my invention. Fig. 2 is a transverse section on the line2-2 of Fig. 1. Fig. 3 is an underneath plan view of an adjustable headto be hereinafter specifically referred to, and Fig. 4 is a detailedside elevation of an element of the invention to be hereinafterspecifically referred to.

Referring specifically to the accompanying drawing the letter Adesignates the piston rod provided with an annular retaining flange aand with a reduced extremity threaded as at l) for the reception of anadjusting nut B. The nut B bears against a movable head 1 which looselysurrounds the rod A and which is formed on its inner surface with anannular recess 2 concentric to the central opening 3 of said head. Theretaining flange 0 serves as a stop or support for a coniform member 4loosely surrounding the rod A and provided at its lower end with anannular flange or extension 5. The member 4 coacts with elements carriedby the head 1 to Specification of Letters Patent.

Application filed September 17. 1906. Serial No. 335.009.

Iratented May 21, 1907.

afford a substantially concaved or hour glass shape bearing surface.These elements are shown in detail in Fig. 4 and severally comprise amember 6 formed with an inclined side 7, a concaved side 8 and a roundedupper edge 9. The members 6 interfit in the recess 2, and as an entiretyserve to afford a coniform follower for effecting an adjustment of thepacking rings 10 held between the flange 5 and the outer portion of thehead 1 in conformable relation to the bearing surface between saidflange and .said head. In this relation the lower ends of the members 6overlap the inclined surface of the member 4 and ride upon said surfacein effecting an adjustment of the packing rings 10.

From the foregoing description the manner of use will be readilyapparent. By turning the nut B in the proper direction the head 1 may beforced inwardly to take up the wear upon the rings 10. In thisoperation, the rounded edge 9 of the members 6 permits of said membershaving a limited play or pivotal movement in the recess 2, whereby saidmembers are permitted a slight degree of relative expansion in theirassembled relation.

While the elements herein shown and described are well adapted to servethe functions set forth, it is obvious that .various minor changes maybe made in the proportions, shape and arrangement of the several partsWithout departing from the spirit and scope of the invention as definedin the appended claims.

Having fully described my invention I claim:

1. In a piston packing the combination with a piston rod of a stationaryconiform element surrounding the same and carried thereby a movable headsurrounding said rod, an inverted coniform element seated within saidhead, said element comprising independent sections having their endsoverlapping said first named element and packing rings clamped betweensaid head and said first named element.

2. In a piston packing the combination with a piston rod of a stationaryconiform element surrounding the same and carried thereby, amovable'head loosely surrounding said rod and formed with an annularrecess, tween said head and said first named conian inverted coniforniclement comprising inform element. 10 dependent co-extenswe sectlonsseated wlth In testimony whereof I affix my signature then larger endsin said recess and having a 1n presence of two witnesses.

limited play therein, the lower ends of said CHARLES B. SHEPARD.sections overlapping said element, an adjustl/Vitnesses: ing nutthreaded upon said rod and engaging FLETCHER R. MOGINNIS,

said head and packing rings clamped be- 1 TIM J. OSULL VAN.

